<pre>Exception (Database Exception) &#039;yii\db\Exception&#039; with message &#039;SQLSTATE[HY000] [1045] Access denied for user &#039;root&#039;@&#039;localhost&#039; (using password: NO)&#039; 

in /www/feehicms/vendor/yiisoft/yii2/db/Connection.php:597

Stack trace:
#0 /www/feehicms/vendor/yiisoft/yii2/db/Connection.php(943): yii\db\Connection-&gt;open()
#1 /www/feehicms/vendor/yiisoft/yii2/db/Connection.php(930): yii\db\Connection-&gt;getMasterPdo()
#2 /www/feehicms/vendor/yiisoft/yii2/db/Schema.php(442): yii\db\Connection-&gt;getSlavePdo()
#3 /www/feehicms/vendor/yiisoft/yii2/db/Connection.php(838): yii\db\Schema-&gt;quoteValue(&#039;22&#039;)
#4 /www/feehicms/vendor/yiisoft/yii2/db/Command.php(199): yii\db\Connection-&gt;quoteValue(&#039;22&#039;)
#5 /www/feehicms/vendor/yiisoft/yii2/db/Command.php(1018): yii\db\Command-&gt;getRawSql()
#6 /www/feehicms/vendor/yiisoft/yii2/db/Command.php(1039): yii\db\Command-&gt;logQuery(&#039;yii\\db\\Command:...&#039;)
#7 /www/feehicms/vendor/yiisoft/yii2/db/Command.php(400): yii\db\Command-&gt;queryInternal(&#039;fetch&#039;, NULL)
#8 /www/feehicms/vendor/yiisoft/yii2/db/Query.php(259): yii\db\Command-&gt;queryOne()
#9 /www/feehicms/vendor/yiisoft/yii2/db/ActiveQuery.php(292): yii\db\Query-&gt;one(NULL)
#10 /www/feehicms/vendor/yiisoft/yii2/db/BaseActiveRecord.php(107): yii\db\ActiveQuery-&gt;one()
#11 /www/feehicms/vendor/feehi/cms-core/frontend/controllers/ArticleController.php(39): yii\db\BaseActiveRecord::findOne(Array)
#12 [internal function]: cms\frontend\controllers\ArticleController-&gt;cms\frontend\controllers\{closure}(Object(yii\base\InlineAction), NULL)
#13 /www/feehicms/vendor/yiisoft/yii2/filters/HttpCache.php(129): call_user_func(Object(Closure), Object(yii\base\InlineAction), NULL)
#14 /www/feehicms/vendor/yiisoft/yii2/base/ActionFilter.php(75): yii\filters\HttpCache-&gt;beforeAction(Object(yii\base\InlineAction))
#15 [internal function]: yii\base\ActionFilter-&gt;beforeFilter(Object(yii\base\ActionEvent))
#16 /www/feehicms/vendor/yiisoft/yii2/base/Component.php(557): call_user_func(Array, Object(yii\base\ActionEvent))
#17 /www/feehicms/vendor/yiisoft/yii2/base/Controller.php(274): yii\base\Component-&gt;trigger(&#039;beforeAction&#039;, Object(yii\base\ActionEvent))
#18 /www/feehicms/vendor/yiisoft/yii2/web/Controller.php(164): yii\base\Controller-&gt;beforeAction(Object(yii\base\InlineAction))
#19 /www/feehicms/vendor/yiisoft/yii2/base/Controller.php(155): yii\web\Controller-&gt;beforeAction(Object(yii\base\InlineAction))
#20 /www/feehicms/vendor/yiisoft/yii2/base/Module.php(528): yii\base\Controller-&gt;runAction(&#039;view&#039;, Array)
#21 /www/feehicms/vendor/yiisoft/yii2/web/Application.php(103): yii\base\Module-&gt;runAction(&#039;article/view&#039;, Array)
#22 /www/feehicms/vendor/yiisoft/yii2/base/Application.php(386): yii\web\Application-&gt;handleRequest(Object(yii\web\Request))
#23 /www/feehicms/frontend/web/index-test.php(18): yii\base\Application-&gt;run()
#24 {main}</pre>